^hot^ | 3 Wire Dell Laptop Charger Wire Diagram

Positive (+) terminal (VCC). This carries the main 19.5V power.

Usually the White wire (or sometimes Red). This carries the 19.5V DC power. 3 Wire Dell Laptop Charger Wire Diagram

Here is the detailed explanation and wiring diagram for a (typically the barrel-type connector with a center pin). Positive (+) terminal (VCC)

That is a drain wire or shielding. It is connected to ground (GND) and helps reduce electromagnetic interference. Solder it to the same spot as your black ground wire. 3 Wire Dell Laptop Charger Wire Diagram

Always unplug your charger from the wall outlet before attempting any repairs to avoid electric shock or shorting out the internal components.